Eegeneeative skelp heating fuenace



(No Model.) sheets-sheet 1.

' RBGBNERATIVE SKELP HEATING FURNAGE.

MIV` SMITH.

Patented May 20, 18S/L IJIIIIJPI. l l l l l l l l 1 l J I x 4 l l l l 1I I l l 7 l l l l I l I l I I l l I l J I| vevaor (No Model.) 3Sheets-Sheet 2.

M. V. SMITH.

REGBNBRATIVE SULB-HEATING PURNAGB. No. 299,030. Patented May 20, 1.884.

N. PETERS, Pholo-Limogmpher. wmhingmn. D. C.

(Nc. Model 3 Sheets-Sheet 3.

M. V. SMTH.

REGENERATIVE SKELP HEATING FURNAGE. No. 299,030. Patented May 2o, 1384.

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N. PETERS. PhowLixhuguplwr, wuhington. D. c

Unirse @rares Parenti? firmen.,

MARTIN V. SMITH, OF TYRONE, PENNSYLVANIA.

REGENERATIV. SKELP-HEATING FU RNACE.

SPECIFICATION forming part of Letters Patent No, 299,030, dated May 20,1884.

Application tiled December 8, 1883.

To @ZZ whom, it may concern.-

Be it known that I, MARTIN V. SMITH, a citizen of the United States,residing at Tyrone, in the county of Blair and State of Iennsylvania,have invented a new and useful Im` provement in Regenerative SkelpHeating Furnaces; and I hereby declare the following to be a full,clear, and exact description there- 5o ply.

My invention relates to the construction of the regenerators and the airand gas ports which form the entrance to the combustionehamber, and tovarious points of improvements in skclpheating furnaces, which aredesigned to heat the skelps or strips of iron placed therein uniformlyprior to being rolled or formed into tubes or cylinders.

My invention consists in extending the air-regenerators to a point abovethe working-hearth of the furnace; in projecting the air lues or portsover and across the top of the gas-regenerators and parallel to thegas-fines, and utilizing the covering of the gas-regenerators for thebottoms of the air-flues; in supporting the roof of the working orcombustion chamber on the brick-work forming the air and gas ports, andin making the roof or covering of the air-regenerators separate fromthat of the working or combustion chamber, it being supported at oneside by the brickwork forming the air and gas ports or iiues.

Referring to the drawings, Figure l is atop or plan view on a line belowthe roof of the furnace. Fig. 2 is a vertical longitudinal sectionalview on the line x x of Fig. l. Fig. 3 is a sectional view on the line yy of Fig. 1.

A is the bed of the furnace, which is long and narrow, and is supportedon a suitable bed or foundation of masonry by iron bars. The bed of thefurnace is filled with sand, on which the skelp to be heated is placed,while the air-holes B and the open spaces (l beneaththe furnace preventthe under side of the furnace-bed from being injuriously heated.Extending along each side, and parallel with the heating-chamber orfurnace, are located the regenerator-chambers. D D are thegas-regenerators,which connect with t-he gas-producing furnace, or withany suitable source of sup- The gas-regenerator chambers are filled withthe usual pile of 'regenerator-brick, and

(No model.)

connect with the combustion or working chambei E by means of ports orconduits F and flues F,which alternate with the ports or airconduits G.H H are the air-regenerators, and connect with the combustion or workingchamber E by means of ports or conduits G, which extend over and acrossthe gas-regenerators, the bottoms of said air ports or conduits G beingformed by the covering or arch of the gas-regenerators. The air flues orconduits G are parallel with the gas-fines or conduits F, and open intothe combustion-chainber alternately with the gas flues, thus insuring auniform supply of air to effect a more complete combustion of the gas.The brick which form the piles of the air-regenerators are laid up so asto reach a point above the bed or working -hearth of the furnace. Thisconstruction gives a greater heating-surface, and as a result the air,in its passage through th e pile of regenerator-bricks, reaches thecombustionchamber and is mingled with the gas in a highly-heated state,thus effecting a complete combustion of the gases. By this arrangementof having the gas and air flues to enter the combustion-chamber fromtheir respective regenerators alternately and throughout the entirelength of the furnace, I am enabled to heat the skelp or contents of thefurnace uniformly by producing a uniform temperature throughout thefurnace, and thus obviate the burning or overheating of the skelp in oneportion of the furnace, while in another portion of the furnace theskelp is imperfectly heated, as is the result in most furnaces of thisclass where the air and gas are thrown into the furnace from a singlecombining-flue.

It will be observed that the side walls and arches of thegas-regenerating compartments, together with the arches and masonrywhich form the top and sides of the air ilucs or conduits, form anabutment of brick-work which is sufficiently strong to support the archor roof of the combustion or working chamber. This is an importantfeature of my invention, for the reason that the walls which support thearch or roof of the combustion-chamber are rigid and less liable toexpand and allow the arch to sag or fall in, as is often the ease inthis class of furnaces where great heat is required.

Anotherimportant feature of my invention is, that the gas and airregenerators are above the ground, or extend above the floor-level,which obviates the necessity of making great 5 excavations, and theconstruction of vast piles of masonry therein, as is the ease withregenerator-furnaces generally; and, furthermore, the gas and airregenerators are embraced under the same roof as the combustion orheating 1o chamber. The roofs or arches covering the air-regeneratorsare separate from that of the combustion or working chamber, and aresupported at one side by the brick-work which formsthe air and gas portsor flues, and are 15 supported at their other sides by the outer wall.Gas and air are supplied to their respective regenerators by pipes orconduits leading to or through the openings 1 1 2 2,which are controlledby suitable valves,-so that they 2o can be shut off when a reversal ofthe draft is required and allow the waste products to pass 5 into thetunnel I, leading to the stack.

The operation of my furnace is the same as that of allregenerator-furnaees of this class, 2 5 the direction ofthe gases andair being changed alternately, so as to utilize the heat absorbed by thepiles of regeneratonbrick in heating the airand gases to make a moreperfect combustion.,r

J is the door through which the material to be operated upon is put intoand withdrawn from the furnace.

I do not claim in this application the regenerators extending above thefioor-level to 3 5 a point near the level of the working-hearth,V

as this is embraced in my Patent No. 267,116, of November 7, 1882.

Having thus described my invention, what I claim is- 1; In aregenerative furnace, the air flues or 4o conduits leading from theair-regenerators, eX- tending across and over the gas-regenerators, andentering the combustion or melting chamber at the sides thereof, and onthe same level and parallel to the gas fiues or conduits, as 45 setforth.

2. In a furnace of the character described, the air-regenerators ofwhich open into the combustion or working chamber by a series of airflues or ports alternating with gas lues or 5o ports opening into thecombustion-chamber at the sides thereof, and on the same level with theair-flues, the bottoms of the air-flues forming the arch or cover of thegas-regenerator, as set forth. 55

3. In ya regenerative furnace, the air flues or conduits leading fromthe air-regenerators, eX- tending across and' over the gas-regenerators,the walls of said gas-regenerators being eX- tended upward above saidflues, to form the abutments or skewbacks for the support of the arch orroof of the combustion-chamber, as set forth. y

4. A furnace for heating skelp, consisting of a long narrow heating andworking chamber, 65 with air and gas regenerators on each side, whichconnect with the combustion-chamber by ports or flues opening directlyinto the a sides thereof and in alternate series, said air and gas portsbeing arranged on the same level, 7o as set forth.

In testimony whereof I affix my signaturein presence of two witnesses.

MARTIN v. SMITH. [L 5.]

Vitnesses:

W. H. ScULLrN, D. T. CALDWELL.

